The number of white blood cells tends to decrease a week to 10 days after chemotherapy, especially after the first round of treatment. Chemotherapy and infection symptoms might pose serious risks if white blood cell counts fall dangerously low. Infection might delay further cancer treatment or require lower doses of chemo.

The human body produces five types of white blood cells to regulate immune system functioning. Chemotherapy and infection risk hinge on several factors, including how low white cell counts fall, how long they remain low, and the type of white blood cells affected. The kind of chemotherapy used might also influence whether infection develops. Infection commonly appears in the mouth, intestines, genital tract, or on skin surfaces.

Red blood cells carrying oxygen throughout the body might also be harmed by chemotherapy. Some patients bruise easily, or bleed through the nose or mouth, when red blood cell counts drop. Blood in the urine and dark feces, along with a red rash on the skin, might also indicate a low red blood cell count.

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Infection represents just one of the possible side effects of cancer treatment. Common complaints include nausea and vomiting, and a loss of appetite that could lead to weight loss. Patients might become anemic, or suffer diarrhea or constipation, while undergoing treatment. Signs of suppressed bone marrow functioning include fatigue, rapid heart beat, and shortness of breath.

Doctors commonly recommend frequent hand washing to address chemotherapy and infection management. Avoiding large crowds and ill family and friends might also help lower the risk, especially during flu season. Cuts should be cleansed and covered to prevent bacterial infection. Meat should be cooked thoroughly to protect against gastrointestinal infection. If an infection develops, doctors commonly prescribe antibiotics.

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